Tricycle



FIG. 1 is a left front perspective view of a tricycle showing my new design;

FIG. 2 is a right rear perspective view thereof;

FIG. 3 is a fragmentary perspective view of a tricycle showing a second embodiment of my new design, it being understood that the tricycle body has been omitted for ease of illustration, wherein the only difference resides in the handle bar structure; and

FIG. 4 is a fragmentary perspective view of a tricycle showing a third embodiment of my new design, it being understood that the tricycle body has been omitted for ease of illustration, wherein the only difference resides in the handle bar structure. 

The ornamental design for a tricycle, substantially as shown and described. 